package com.atguigu.boot.config;

import com.atguigu.boot.bean.Pet;
import com.atguigu.boot.converter.GuiguMessageConverter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.convert.converter.Converter;
import org.springframework.format.FormatterRegistry;
import org.springframework.http.MediaType;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.util.StringUtils;
import org.springframework.web.accept.HeaderContentNegotiationStrategy;
import org.springframework.web.accept.ParameterContentNegotiationStrategy;
import org.springframework.web.filter.HiddenHttpMethodFilter;
import org.springframework.web.servlet.config.annotation.ContentNegotiationConfigurer;
import org.springframework.web.servlet.config.annotation.PathMatchConfigurer;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.util.UrlPathHelper;

import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * @author : leimingchao
 * @date Date : 2021年11月14日 11:01
 */
@Configuration(proxyBeanMethods = false)
public class WebConfig /*implements WebMvcConfigurer*/ {

    @Bean
    public HiddenHttpMethodFilter hiddenHttpMethodFilter() {
        HiddenHttpMethodFilter hiddenHttpMethodFilter = new HiddenHttpMethodFilter();
        hiddenHttpMethodFilter.setMethodParam("_m");
        return hiddenHttpMethodFilter;
    }

    //@Bean //WebMvcConfigurer
    @Bean
    public WebMvcConfigurer webMvcConfigurer() {
        return new WebMvcConfigurer() {
            @Override
            public void configurePathMatch(PathMatchConfigurer configurer) {
                    UrlPathHelper urlPathHelper = new UrlPathHelper();
                    //不移除分号(;)后面的内容，矩阵变量功能就可以生效
                    urlPathHelper.setRemoveSemicolonContent(false);
                    configurer.setUrlPathHelper(urlPathHelper);
            }

            @Override
            public void addFormatters(FormatterRegistry registry) {
                registry.addConverter(new Converter<String, Pet>() {
                    @Override
                    public Pet convert(String source) {
                        if (!StringUtils.isEmpty(source)) {
                            Pet pet = new Pet();
                            String[] split = source.split(",");
                            pet.setName(split[0]);
                            pet.setAge(split[1]);
                            return pet;
                        }
                        return null;
                    }
                });
            }

            @Override
            public void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
                converters.add(new GuiguMessageConverter());
            }

            /**
             * 自定义内容协商策略
             * @param configurer
             */
            @Override
            public void configureContentNegotiation(ContentNegotiationConfigurer configurer) {
                //Map<String, MediaType> mediaTypes
                Map<String, MediaType> mediaTypes = new HashMap<>();
                mediaTypes.put("json",MediaType.APPLICATION_JSON);
                mediaTypes.put("xml",MediaType.APPLICATION_XML);
                mediaTypes.put("gg",MediaType.parseMediaType("application/x-guigu"));
                //指定支持解析哪些参数对应的媒体类型
                ParameterContentNegotiationStrategy parameterStrategy = new ParameterContentNegotiationStrategy(mediaTypes);
                //parameterName = "format"
                parameterStrategy.setParameterName("ff");
                HeaderContentNegotiationStrategy headerStrategy = new HeaderContentNegotiationStrategy();
                configurer.strategies(Arrays.asList(parameterStrategy,headerStrategy));
            }
        };
    }


    // @Override
    // public void configurePathMatch(PathMatchConfigurer configurer) {
    //     UrlPathHelper urlPathHelper = new UrlPathHelper();
    //     //不移除分号(;)后面的内容，矩阵变量功能就可以生效
    //     urlPathHelper.setRemoveSemicolonContent(false);
    //     configurer.setUrlPathHelper(urlPathHelper);
    // }
}
